<h4>Work with External Servers</h4>
<p>Apps provide new and various experience with mash-up through contents from outside servers.</p>
<p><a href="http://devsquare.nate.com/docs/development-guide/api-for-advancement/work-with-external-servers">Read more..</a></p>
<h4>Parameter Passing</h4>
<p>It offers functionalities to call app introduction page or canvas view through URL parameter.</p>
<p><a href="http://devsquare.nate.com/docs/development-guide/api-for-advancement/parameter-passing">Read more..</a></p>
<h4>Notification Messages</h4>
<p>You may send alarm to users from Apps.</p>
<p><a href="http://devsquare.nate.com/docs/development-guide/api-for-advancement/notification-messages">Read more..</a></p>